中文摘要：

针对由单个制造商和单个零售商构成的供应链,考虑制造商生产两种碳足迹不同的可替代的产品,建立供应链优化决策模型,确定最优的产品环保水平与销售价格,提出供应链系统的协调机制.分析了产品之间不同的替代程度对均衡解和各成员利润的影响,并进一步讨论了收益共享契约对于提高供应链环境的作用.研究表明,产品环保水平竞争强度的增加会带来供应链成员利润的增加而价格竞争强度的增加会带来供应链成员利润的减少.集中式决策不仅有利于供应链利润的提高,而且有利于供应链环境的改善.当消费者对产品之间环保水平的敏感程度较高时,收益共享契约的协调效果较好.

英文摘要：

This paper focuses on a supply chain consisting of single manufacturer and single retailer. We consider thatthe manufacturer produces two substitutable products which have different carbon footprints, and develop supply chain optimization decision-making model to determine the optimal environmentallevels and products＇ selling prices. Then we put forward supply chain coordination mechanism and analyze the impact of product substitutionon equilibrium solution and individual members＇ profit. And further we discuss the impact of revenue sharing contract on improving the level of the supply chain environment.We find that as the competition for product environmental level intensifies, the profits of supply chain members will always increase.Meanwhile, as price competition intensifies, the profits will decrease.In addition, centralized decision-making is not only beneficial to the improvement of the supply chain＇s profit, andis also helpful for the improvement of the supply chain environment level. The higher the consumers＇ sensitivity on difference of product environmental protection level, the better the revenue-sharing contract＇s coordination effect.